2-O-Acetyl-1,3-anhydro-2-C-[(1S,2S,3R,9S)-2-(benzoyloxy)-9-[3(S)-(tert-butoxycarboxamido)-2(R)-hydroxy-5-methylhexanoyloxy]-1,5-dihydroxy-4,8,11,11-tetramethyl-6-oxobicyclo[5.3.1]undeca-4,7-dien-3-yl]-4-deoxy-D-erythro-pentitol
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